Quick and Easy Silicone Custom Fit Earbuds

Allen Lab Vlog, 311, 9, 27, 2021 Ive made these a few times. The easy way is fine, but can I make it better I tried it the hard way. I made a plaster cast of my ears to mold the silicone earbuds, but it didnt work as well as just mashing the silicone plugs directly into my head. Silicone earplugs I used: